WO2019095533A1 - Radiating system and projection device - Google Patents

Abstract

A radiating system and a projection device, wherein the radiating system (1) comprises a radiating frame (11) and a radiating component (12) on the radiating frame (11). The radiating component (12) is fixed onto the radiating frame (11) by means of a first elastic fixing member (13); provided between the radiating component (12) and the radiating frame (11) is a first sealing device (14); the first elastic fixing member (13) drives the radiating component (12) to press the first sealing device (14) so that the first sealing device (14) seals the connection clearance between the radiating component (12) and the radiating frame (11). With an integrated system structural design, not only may uniform heat of a heat conductive material be achieved, but also the sealing and dust-proofing requirements of a device may be satisfied; the fixing mode is simple, and the assemblability and the producibility of the product may be increased.

Description

[Correction according to Rule 26 22.01.2018] Cooling system and projection equipment Technical field

The utility model relates to the field of mechanical heat dissipation, in particular to a heat dissipation system capable of providing sealing and dustproof and providing constant pressure to a heat generating device and a projection device having the same.

Background technique

In electronic devices, there are generally heat-generating devices that need to dissipate heat to ensure the normal operation of the electronic device. For example, many optical devices in the projection device need to dissipate heat, and the optical device needs to be sealed in the cavity to prevent dust from entering. Many optical devices cannot withstand a large amount of pressure, but require a certain pressure to ensure that the heat conductive material can be compressed, so that the heat sink and the heat generating device can be in good contact.

technical problem

At present, most of the heat sinks on the market are fixed by means of hard connection or a single heat sink with elastic elements. These heat sinks are not suitable for sealing requirements, and cannot provide constant pressure. If the pressure is excessive, the optical components are damaged. In view of the above needs, the present invention provides a heat sink that provides sealing and dustproofing and provides a constant pressure function for the heat generating device.

Therefore, it is necessary to provide a new heat dissipation system to solve the above problems.

Technical solution

The utility model provides a new heat dissipation system and a projection device using the same, which solves the problem that the prior art cannot be sealed and cannot provide constant pressure, resulting in low reliability of the product.

A technical solution adopted by the present invention is to provide a heat dissipation system including a heat dissipation frame and a heat dissipation component disposed on the heat dissipation frame, wherein the heat dissipation component is fixed on the heat dissipation frame by a first elastic fixing member. Providing a first sealing device between the heat dissipating component and the heat dissipating frame, the first elastic fixing member driving the heat dissipating component to press the first sealing device, so that the first sealing device seals the heat dissipating component a connection gap with the heat dissipation frame.

Preferably, the first elastic fixing member is a spring screw, and includes a heat dissipating screw and a heat dissipating spring sleeved on the heat dissipating screw.

Preferably, the heat dissipation component includes a heat dissipation substrate disposed on the heat dissipation frame and heat dissipation fins connected to the heat dissipation substrate, the heat dissipation screw penetrating the heat dissipation substrate and fixing the heat dissipation substrate to the heat dissipation a heat dissipating spring abuts on a side of the heat dissipating substrate away from the heat dissipating frame, and the heat dissipating spring compresses the heat dissipating substrate to compress the first sealing device Achieve sealing.

Preferably, a center of the heat dissipation substrate is provided with a heat dissipation protrusion protruding toward the heat generating component, and the heat dissipation material is provided with a heat conductive material, and the heat conductive material abuts on the heat generating component of the heat generating component.

Preferably, the first sealing device is disposed around the heat dissipation boss.

Preferably, the heat dissipation system further includes a second elastic fixing member and a second sealing device for assembling with the heat generating component, the second elastic fixing member driving the heat dissipation frame to press the second sealing device, The second sealing device is sealed to the heat dissipation system and the heat generating component.

Preferably, the second elastic fixing member is a spring screw, and includes a fixing screw and a fixing spring sleeved on the fixing screw, the fixing screw penetrating the heat dissipation frame and fixing the heat dissipation frame to the heat generating component The heat-dissipating spring abuts on a side of the heat-dissipating frame away from the heat-generating component. In an operating state, the fixing spring compresses the heat-dissipating frame, so that the heat-dissipating frame compresses the first sealing device to achieve sealing.

Preferably, the second sealing device is a gasket disposed around the heat generating component of the heat generating component.

Another technical solution adopted by the present invention is to provide a projection apparatus including the heat dissipation system as described above.

Preferably, the heat generating component includes a heat generating component located at a center as a heat source and a supporting component surrounding the heat generating component, the heat radiating frame is fixed on the sealing cavity, and the heat radiating component is provided with a heat generating component a heat dissipation boss protruding in a direction, the heat dissipation boss abutting on the heat generating component.

Beneficial effect

The utility model has the beneficial effects that the heat dissipation system and the projection device having the functions of sealing and dustproof and providing constant pressure for the heat generating device are distinguished from the prior art, and the heat conduction system and the projection device are designed by using the overall structural design of the system. When the material is soaked, it can meet the effect of sealing and dustproof of the device, and the fixing method is simple, which can improve the assembly and productivity of the product.

DRAWINGS

1 is a schematic structural view of a heat dissipation system of the present invention;

2 is a schematic structural view of a first elastic fixing member of the present invention.

Embodiments of the invention

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides a heat dissipating system capable of providing sealing and dustproofing and providing constant pressure to a heat generating device and a projection device using the same. The whole structural design of the system can realize the heat generating device sealing while realizing the heat conduction of the heat conducting material. Dust-proof effect, simple fixing method and high reliability.

As shown in FIG. 1 , the utility model is described by using a projection device as an example of an electronic product, wherein the heat generating component 2 can be a laser, a color wheel, a DMD, a CPU or an LED light emitting chip, etc., specifically including a heat generated as a heat source at the center. The member 202 is a member and a support member 201 that surrounds the heat generating member 202. Wherein the support member 201 can be an optical cavity or other support structure.

The heat dissipation system 1 is assembled on the heat generating component 2, and is in contact with the heat generating component 202 to realize heat transfer and divergence.

The heat dissipation system 1 includes a heat dissipation frame 11, a heat dissipation assembly 12 disposed on the heat dissipation frame 11, a first elastic fixing member 13, a first sealing device 14, a second elastic fixing member 15, and a second sealing device 16. The first sealing device 14 is for sealing the connection gap between the heat dissipation component and the heat dissipation frame; the second sealing device 16 is for forming a seal between the heat dissipation frame and the heat generating component 2.

The first elastic fixing member 13 is for fixing the heat dissipating component 12 to the heat dissipating frame; and the second elastic fixing member 15 is for connecting the heat dissipating system and the heat generating component 2 together.

The heat dissipating component 12 includes a heat dissipating substrate 121 and heat dissipating fins 122 , and the heat dissipating substrate 121 is fixed on the heat dissipating frame 11 by the first elastic fixing member 13 . The first sealing device 14 is disposed between the heat dissipation substrate 121 and the heat dissipation frame 11 . The first elastic fixing member 13 is a first spring screw, and includes a heat dissipating screw 131 and a heat dissipating spring 132 sleeved on the heat dissipating screw 131. The heat dissipating screw 131 penetrates the heat dissipating substrate 121 and is screwed into the heat dissipating frame 11 to thereby dissipate the heat dissipating substrate 121. The heat dissipating spring 132 abuts on the side of the heat dissipating substrate 121 away from the heat dissipating frame 11 . In the working state, the heat dissipating screw 131 is screwed into the heat dissipating frame 11 , and the heat dissipating spring 132 is inserted during the screwing process of the heat dissipating screw 131 . Gradually compressed, a constant and constant pressure is generated to the heat dissipation substrate 121, and the heat dissipation substrate 121 is driven against the first sealing device 14 to achieve sealing. In the present embodiment, the first sealing device 14 is a gasket. After being subjected to pressure, the gasket is pressed to produce a sealing effect. There are four heat dissipating screws 131 and a heat dissipating spring 132, which are respectively located around the heat dissipating substrate 121, so that uniformity of force and stability of fixation can be ensured.

Further, the heat dissipation system further includes a heat dissipation boss 123 protruding from the center of the heat dissipation substrate 121 toward the heat generating component 2, and the heat dissipation boss 123 abuts on the heat generating component 202 of the heat generating component 2. The heat on the heat generating component 2 is transferred to the heat dissipation substrate 121 through the heat dissipation boss 123, and finally transmitted to the heat dissipation fins 122 to achieve heat dissipation. Preferably, the heat dissipation boss 123 and the heat dissipation substrate 121 are integrally formed.

Further, a heat conductive material 3 is further disposed between the heat dissipation boss 123 and the heat generating component 202, and the heat conductive material is disposed to further promote heat flow and ensure sufficient heat dissipation.

The heat dissipation frame 11 is provided with a through hole for accommodating the heat dissipation boss 123. The first sealing device 14 is disposed around the heat dissipation boss 123. Preferably, the first sealing device 14 is an annular sealing ring surrounding the heat dissipation boss 123. Achieve sealing and dust protection inside the heat dissipation system.

Similarly, the second elastic fixing member 15 is a second spring screw, and includes a fixing screw 151 and a fixing spring 152 sleeved on the fixing screw 151. The fixing screw 151 penetrates the heat dissipation frame 11 and is screwed into the heat generating component to dissipate heat. The system is combined with the heat generating component 2. The fixing spring 152 abuts on the side of the heat dissipating frame 11 which is far away from the heat generating component 2. In the working state, the fixing screw 151 is screwed in, and the fixing spring 152 is gradually compressed to generate a constant and constant pressure to the heat dissipating frame 11. The heat radiating frame 11 is driven to press the second sealing device 16 to achieve sealing. In the present embodiment, the second sealing device 16 is a gasket. After being subjected to pressure, the gasket is pressed to produce a sealing effect.

The utility model realizes sealing by compressing the corresponding sealing ring by the first elastic fixing member 13 and the second elastic fixing member 15 to generate a constant pressure, wherein the structures of the first elastic fixing member 13 and the second elastic fixing member 15 are the same Alternatively, in the present embodiment, the same structure includes a screw and a spring sleeved on the screw. Referring to FIG. 2, the first elastic fixing member 13 is taken as an example to illustrate the structure and the principle of generating a constant pressure. The heat-dissipating screw 131 includes a screw head 1311, a screw 1312 and a screw 1313 extending from the screw. The heat-dissipating spring 132 abuts on one side of the screw head 1311, and the screw is inserted into the heat-dissipating frame 11 to provide pressure on the heat-dissipating frame. The thickness of the heat dissipation substrate 11 is Lg, the length of the screw 1312 of the heat dissipation screw 131 is Ld, the original length of the heat dissipation spring 132 is Ls1, the length of the heat dissipation spring 132 after compression is Ls2, and the thickness of the gasket after compression is Lm, wherein Ls2 = Ld - Lg - Lm.

Then, the pressure provided by the heat dissipation spring is F=K*(Ls1-Ls2), where K is the stiffness of the heat dissipation spring. At this time, the pressure F of the four heat dissipation springs at the four corners of the heat dissipation substrate is the constant pressure provided.

The utility model has the beneficial effects that the utility model provides a heat dissipation system and a projection device, which utilizes the overall layout of the system, reasonably places the heat dissipation components, reduces the temperature of the system components, and achieves efficient heat dissipation. In the heat dissipation of the heat-generating component, a good seal is obtained for the heat-generating component, and the product competitiveness is improved.

The above description is only an embodiment of the present invention, and thus does not limit the scope of the patent of the present invention, and the equivalent structure or equivalent flow transformation made by using the specification and the drawings of the present invention, or directly or indirectly applied to other The related technical fields are all included in the scope of patent protection of the present invention.

Claims (10)

1. A heat dissipation system includes a heat dissipation frame and a heat dissipation component disposed on the heat dissipation frame, wherein the heat dissipation component is fixed on the heat dissipation frame by a first elastic fixing component, and the heat dissipation component and the heat dissipation component A first sealing device is disposed between the frame, the first elastic fixing member driving the heat dissipating component to press the first sealing device, so that the first sealing device seals between the heat dissipating component and the heat dissipating frame Connection gap.
2. The heat dissipation system according to claim 1, wherein the first elastic fixing member is a first spring screw, and comprises a heat dissipating screw and a heat dissipating spring sleeved on the heat dissipating screw.
3. The heat dissipation system according to claim 2, wherein the heat dissipation component comprises a heat dissipation substrate disposed on the heat dissipation frame and a heat dissipation fin connected to the heat dissipation substrate, the heat dissipation screw penetrating the heat dissipation substrate And fixing the heat dissipating substrate to the heat dissipating frame, wherein the heat dissipating spring abuts on a side of the heat dissipating substrate away from the heat dissipating frame, and in a working state, the heat dissipating spring presses the heat dissipating substrate, The heat-dissipating substrate is compressed by the first sealing device to achieve sealing.
4. The heat dissipation system according to claim 3, wherein a center of the heat dissipation substrate is provided with a heat dissipation boss protruding toward the heat generating component, and the heat dissipation land is provided with a heat conductive material, and the heat conductive material is abutted On the heat-generating component of the heat-generating component.
5. The heat dissipation system according to claim 4, wherein said first sealing means is disposed around said heat dissipation boss.
6. The heat dissipation system according to claim 1, wherein said heat dissipation system further comprises a second elastic fixing member and a second sealing member for assembling with the heat generating component, said second elastic fixing member driving said The heat dissipation frame presses the second sealing device such that the second sealing device seals the heat dissipation system and the heat generating component.
7. The heat dissipation system according to claim 6, wherein the second elastic fixing member is a second spring screw, and comprises a fixing screw and a fixing spring sleeved on the fixing screw, the fixing screw penetrating the Dissolving the heat dissipating frame and fixing the heat dissipating frame to the heat generating component, the heat dissipating spring abutting on a side of the heat dissipating frame away from the heat generating component, in a working state, the fixing spring compresses the heat dissipating frame, so that The heat dissipation frame compresses the first sealing device to effect sealing.
8. The heat dissipation system according to claim 7, wherein said second sealing means is a gasket provided around a heat generating component of the heat generating component.
9. A projection apparatus comprising a heat generating component and a heat dissipation system according to any one of claims 1 to 8.
10. The projection apparatus according to claim 9, wherein said heat generating component comprises a heat generating component located at a center as a heat source and a supporting member surrounding said heat generating component, said heat radiating frame being fixed to said sealing cavity The heat dissipating component is provided with a heat dissipating protrusion protruding toward the heat generating component, and the heat dissipating protrusion is in contact with the heat generating component.